New PSAT Math Practice Test 1, Part 16

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These videos and solutions are for the redesigned PSAT, which is for you, if you are taking the PSAT in October 2015 and beyond.

New PSAT Math Practice Tests from CollegeBoard, Practice Test 1, Questions 21 to 24

PSAT Math Practice Test 1 - Calculator

PSAT Practice Test 1 (pdf)

Question 21

What is the minimum value of the function graphed on the preceding x y-plane, for -4 ≤ x ≤ 6. A. -∞
B. -4
C. -2
D. 1

Questions 22 through 24 refer to the following information.

In 1929, the astronomer Edwin Hubble published the data shown. The graph plots the velocity of galaxies relative to Earth against the distances of galaxies from Earth.

Question 22
According to Hubble’s data, how fast, in meters per second, is Galaxy Q moving away from Earth?
A. 2 x 106 m/s
B. 5 x 105 m/s
A. 5 x 102 m/s
A. 2.5 x 102 m/s

Question 23
There are four galaxies shown in the preceding graph at approximately 0.9 Mpc from Earth. Which of the following is closest to the range of velocities of these four galaxies, in kilometers per second?
A. 100
B. 200
C. 450
D. 700

Question 24
Based on the model, what is the velocity, in kilometers per second, of a galaxy that is 15 M p c from Earth?
A. 7,500 kilometers per second
B. 5,000 kilometers per second
C. 1,100 kilometers per second
D. 750 kilometers per second

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